It can be, if the knowledge is genuinely particular to the company's product and procedures, is distinct from knowledge generally or commonly held in the industry, and is documented. L-1B does not require proof that comparable workers are unavailable in the U.S. labour market; general electronics or repair skill, however deep, does not meet the specialized-knowledge standard on its own.
Draw the line between what any technician knows and what only this company's technicians know
The regulation distinguishes special knowledge of the company's product, service, research, equipment, techniques or management from an advanced level of knowledge of the company's processes and procedures. Either can qualify, and neither requires that the knowledge be unique to one person. What it cannot be is knowledge common in the industry.
Owen's file should therefore be built around the elements that are the company's own: the diagnostic software and its fault-tree logic, the calibration procedures written for this client's fleet, the configuration management practice, the escalation history that shows he resolves what others cannot. It should also address why the U.S. subsidiary cannot simply hire locally: the training time, the absence of the software outside the company, the client-specific configurations.
If the honest answer is that a competent U.S. technician could be trained in a few weeks, the case is weak and the company should consider whether a shorter business visit or a different arrangement fits better. Hypothetical example: Mira services a Canadian firm's proprietary membrane-testing platform used by municipal water utilities.
A first review should identify the exact internal methods she knows, the training sequence, who else can use the platform and why her client assignments depend on that knowledge. Version-controlled manuals and escalation records settle the point better than a supervisor's conclusion that she is indispensable. She also needs an uninterrupted qualifying year abroad in the relevant three-year period.
L-1B stay is generally limited to five years, so prior time should be calculated before a lengthy assignment is promised.